I did on the Driver side #1, didn't check P to V on Passenger but head builder was installing new valves and made sure that the valves were at the same position or higher in the heads so we shouldn't need to check other P to V. We knew where the pistons were for both sides (.010 in the hole) (of course that is only true if I has put the pistons in correctly...lol)

We didn't clay it, we used a light checking valve spring so we could check clearance at several places so I would know if i had room to advance or retard the cam with the external timing belt system later.