How do you check the number on that ignition (where is it written)?

I could get a replacement ignition for the engine.

http://www.himodel.com/engines/Rcexl..._90degree.html

I noted one week on the last flight, the sudden increase in power didnt happen and I was able to land scale-like with a constant 10% power whereas the next week it kept happening time and again.

I already have expos of the throttle, almost 90% but that will only soften the center, it cant do anything regarding the sudden surge at the end of stick movement

Ameyam