After last winter's weight loss (about 183lb) the truck developed quite the wheelie issue. After a particularly hard launch a few months ago, it almost came down on top of the guard rail. So, we decided before wrecking it, we needed to calm the wheelies down. We tried several things. It's a hard thing to dial back without hurting the time slip. Lowering the 2-step rev limit worked but the 60' time suffered. Unfortunately, the front shocks have fixed valving and are not adjustable. They would have been the easiest way to slow the front end lift.
We ended up using expired Simpson harness straps to shorten the front axle drop. The shock towers had a couple of existing holes that worked great to bolt the harness buckles to.
It took some trial and error to get just the right amount of slack under the leaf spring. We tried all kinds of things to set the slack/spring gap with. Pry stick handle, receiver hitch, beer can, WD40 can. We finally settled on a can of Flex Seal. Got our 60' time back.