new springs?

[bigb189]

I just got Burgard +2 standered travel a-arms on my 450r. I am 150lbs and am looking to start racing Mx. I am having some trouble bottoming out over my 50ft double. I don't really have the funds for a full shock rebuild or aftermarket right now. I was wondering if I would buy a set of tripple rate springs from works set for a 180lb. ridder if this would work ok.
Thanks