its a 2 valve pushrod, everything it has is between 2500-5000 rpm , if u drag out more rpms great 4 u beating the soft springs I was givin , if u don't here your valves clicking away , either you geared to low or to tight

and tight = engine death

redline all u want , valve float from pushrod engines stops any poss damage

unless valves to tight ---

and roadkill , that "miss" sounds like u need a valve, like axa but not blown cylinder like him

adjust valves NOW