Reply by Steve2

Richard says it succinctly “Most HF stuff (but not all) is only ment to let you know if you if you willl use it enough to need a better tool or not.”

Quit spending good time and money after bad, you had 5 years use; The repair kit for a known brand nailer, let alone service charges are more than the new retail value of a current model nailer.

-- Regards, Steve2