Is there any special trimming or anything that I need to do and, if so, can you do it for me (for additional charge, of course!)?
The Graftech Lite shafts will fit in the Callaway X20 irons (not the X20 Tour irons). The Uniflex steel shaft, and I am assuming you are referencing the steel shaft, was 112 grams, so the Graftech is quite a bit lighter. This will change the overall feel of the club. If your clubs have a uniflex graphite from Callaway in them, I do no have any details of those shafts so I can’t compare. We can reshaft clubs for you. Charge for a re-shaft is $19.95 per club plus the price of the shaft and the grip. You can call our customer service department at 1-800-848-8358 and they can help you with the process of sending the club to us for reshaft.