If you are using the Koni Strut inserts why don't you just send them out and have them rebuilt/revalved. It will save you some cash just on a basic revalve and you could always use that towards adding the secondary compression damping which IMHO is the best way to go. There's a ton of companies that work on Konis and even Koni NA themselves can do it. I've been using Truechoice on my last several suspensions and I've always got what I wanted with great results. I just picked up my GTI's Phase 4s and they are incredible.