spring tension on powervalve

[overbore]

I am not even sure on exactly how the powervalve
works or should,but would like to take the some of
the hit out of the suzuki,and heard that you could
adjust for less hit.has anyone done this and if so
how did you do it.
Thanks

 

[Rider 007]

What year and model Suzuki?

 

[overbore]

01 rm250