Valve Tip/Rocker Height Question??

yes I remember the machinist telling me that the springs were all the correct height (302 castings) and pressure (All new valves). But I didn't ask about valve height (as opposed to spring height). My original question was "if adj rockers could compensate for the valves not being the same height". I think that question has been answered...NO!! But also the valve length (height) has to be correct so that the relationship between the rocker PIVOT point and the valve tip stays correct. When I get the 360 heads machined (all new valves) I'll know what to ask and make sure I get what I ask for. Not only do the valves have to be the correct height but they also must be very close to each other (within .010-.020). Is all this correct on my part??

Treblig