Although a cheaper gun than the TX, the little pocket rocket '99 astounds many with its very refined manners and low recoil in a simpler and lighter break barrel format, and most definitely worth tweaking a little more to improve its manners further still.

As per the above, custom fitted guide & top hat and a piston sleeve are your friends here, combined with a responsible moly re-lube. If not already done, a de-burr and polishing of spring ends will most definitely help.