That sounds alarming <img src="/forums/images/graemlins/scared.gif" alt="" />
Must be a valve problem over all...put in new pistons and rings in honed cylinders and the head has probably been shaved a couple of times. Maybe my compression gauge isn?t the best either, some cheap Equus with a home made tube so it reaches down:)
I?m pretty sure that the valves were correctly set last summer and I haven?t driven it that much.