L28 piston height

[popdaddy]

I've posted this question before but had to many other things going on to check anything.Some of the responses were that the height of the piston was a positive deck of .016" to .020".I haven't put a micrometer on it to get an accurate measurement but I used a feeler gauge(definitely not the greatest idea)and came up with a height of about .013".I put stock head gasket(new)on today to find out that valves are hitting pistons.Engine specs are stock crank,stock rods,87mm flat top pistons,stock head,.005" shave off deck height

[Ed]

Without going into what head, how much has it been shaved all together etc.. try using two head gaskets. I had a +.010".

[e_racer1999]

and this is with stock cam timing, i presume...?