The 150psi number, is this in a forward gear or reverse?
The 240-260 with full TV in reverse is normal.
When you say the outer sleeve, I assume you mean the TV boost valve and sleeve which is the last to be installed into the pump. It can be common for the sleeve or pump to have a burr which makes it a pain to remove and install.
Are all the shifts at 5000, or just the 1-2?
Was the pan clean?
Did you install the #5 checkball or leave it out?

 

150psi in and forward. 240-260 in reverse with no TV. Yes the boost valve sleeve was extremely hard to remove and after scotch brighting its still tight. All shift are high and yes the pan was clean. On the checkball, Im not sure which is number 5 but I reinstalled the checkballs the way they have been in the trans for at least 5 years of normal function, and I have dropped the valvebody several times and have now just gone through the entire trans with a freshen up, expecting that I would find the issue. However the trans is doing the exact same issue. BTW it was originally built with a CK performance shift kit and has worked flawlessly for many years, except for 3rd which has gotten a bit soft on the shift. The clutches and steels were showing signs of wear and were replaced.

 

If you don't have an ATSG book get one.
#5 checkball is in the case, with the case laying upside down on the bench, it will be the one top left corner closest to the pump. If you installed that ball you must have TV exhaust lifter and spring installed. The lifter and spring installs with the throttle lever assembly on top the VB. This assembly is what actuates the throttle valve plunger. If that lifter and spring are not installed I believe the trans will have max line pressure.
Was the PR valve free in the pump stator? That bore can wear out and cause pressure issues but usually low pressure.
Were both boost valves free in their sleeve bores?
If the TV valve, TV limit valve, or line bias valve are stuck, can cause high line too.
A stuck pump slide in a 200 or 700 can cause late shifts too, but honestly I've never had a gauge on one when it happened. It's fairly obvious once it's on the bench, slide and pump have wear marks.

 

Thank you for your help, but I have resolved my issue. It was something very stupid on my part. So my trans that has worked flawlessly for many years started to shit late after a few hard pulls. I assumed the TV valve was stuck, and I believe that was true. When I dropped the pan I found a spring laying in it and I had a flashback of the lifter and spring that you mentioned. Well I assumed the spring came from that but I think it spat out a governor spring. So not really thinking it though I located another link and spring and installed it back on the TV linkage, which needs to be omitted with the CK kit. So this was holding the TV valve in and making close to max line pressure. I honestly thought that spring and link just took up the free slack and positioned the linkage at the proper starting point of TV engagement.

 

So was it an issue with the governor or the TV exhaust lifter and spring?
Thanks for letting us know as It's great to know what solved the problem for people in the future that look at these threads for help.

 

Yes, apparently the CK performance shit kit does not work with that piece in place.