I just purchased a new hydraulic roller cam from Howard's for a 90s small block with a factory hydraulic roller. Their tech line is telling me I could use either the iron cam gear used on the flat tappet small block or the melonized gear used on the factory hydraulic rollers. I was always under the assumption that any kind of roller cam needed to have the harder cam gear. I am posting to get some opinions from those who have been down this road before. I really don't want to take a chance of trashing a $350 camshaft. Any professional advice would be greatly appreciated!