huge timing adjustment issue! all the way retarded is not retarded enough!

[Enjin]

I just got thru rebuilding my sr.

now I go to adjust timing, and I rotate the crank angle sensor to be retarded all the way, but the most retarded it will go is 25 degrees.

what the heck?

[vutony]

http://www.frsport.com/sr20det-crank-angle-sensor-cas-timing-guide-p-648.html