When you do tappet adjustment, 0.002" in 0.003" ex, use the 0.003" to check intake isn't too loose and a 4 thou to check exhaust.
Correct size slides in 'easy' next size up wont go.
Also make sure you rotate crank 360 degrees before second adjustment, you do 4 on TDC 1.4 then the others, again on 1.4
eg
cyl # 1 tdcc, 1 in+ex, 2 ex, 3 in.
cyl #4 tdcc, 4in+ex, 3 ex, 2 in