I am NOT happy with these heads at all. I have read alot about them and everyone said that was the best head for the money. all good so i drop 1395.00 not thinking i would have to drop more dollors to make them work right . not even the person the sold them to me. that they had a geomtry' problem. if he had said that there was a problem i would had said ok what will it take to make it right .. an not batted an eye at it. i even ask about this trouble after i had bought the heads. an was told (You should have no issues at all with your setup ) But guess what i do....... and that is what up sets me. all that said...... i know i can be a bitch at times .. but its my money an i want to make it right the first time and not fire it up and it all comes apart the first time. i have the indy x RHS heads with the prw 1.5 roller rockers. i am having the same trouble with them that everyone else is having. it suck to. but when i put it all on a set of j's heads it all clears and the roller on the tip of the rockers set in the right place. i mean in the middle of the valve stem. the rhs heads are no way close to the tip middle. is there supposed to be a shim under the spring on the indy x heads?? I am really thinking about putting these heads back in the boxs. taking the lost , an buying a set of heads that will work for my set up. Just venting here. i am Not trying to piss off any one here just my felling . not trying to start a fight here .