Up for sale is an equivalent IR 2235-TK1 Tune Up Kit. This quality kit fits IR models 2235QTiMAX and the IR 2235TiMAX. A quality kit that works! These kits have all the ?soft parts? for the throttle and air motor (also includes motor bearings) and a socket retainer and oring for the shank. This kit has plastic blades to replace the OEM blades. Some signs of needing a rebuild would be the obvious loss of power or that persistent air leak. The nice part is the IR 2235 series of tools are fairly easy tools to rebuild and this kit will put your gun back at the top of your shop! I am totally confident in the parts I sell I offer a 14 day warranty from the purchase date. The warranty only applies to the proper install of parts. Usually ships in 24 hours!