So I just installed kibble white stainless intake valves and a J.E. 13.5:1 piston. set the decompression to 60psi with compression gauge and the bike fired right up... several times. got it good and warm and then would not start. checked compression and it had jumped to over 90. I took it apart, checked decompression arm, and the adjuster was still locked tight. wondering why it changed so much so fast without coming loose and backing off but I went ahead and reset it to 60psi again and BINGO fired right up, no issues took if for about a 10 minute ride, came back parked it and tried to fire it up again and nothing. it was late and i needed to get out of the shop so i did not check decompression again but i can only assume thats whats up again...... is this normal with new valves and piston? any advise would be greatly appreciated.