Best way to stiffen the front forks

[hubeerjw]

I have a question for all you suspension guys. What is the best way to stiffen/lengthen the front forks on my drag bike? With 10" struts I can almost get the oil pan to bottom out by rolling the bike and locking the front wheel up and pushing down on the bike, so I know I will have problems at the strip if I wheelie or come down hard (especially if it is strapped). I was wondering if I should put some PVC blocks on top of the fork springs or put in thicker oil (like 40 wt maybe:ummm and make this thing much stiffer than normal. With the extra 10 degrees of rake, this thing is slammed and I don't want to loose control on my first launch, second one maybe, but not my first. Any suggestions?

Thanks,
Jeff