Agreed. 10k pulls for the TRS. HKCS sent me a new Heavy TRS, had it in less than a week after I called. He stated, he had never heard of a TRS breaking. Regarding the tool, installing the Heavy TRS took less than 3 minutes both this time and back in 2016. The standard spring gave me fits, is much more difficult to install. I'd guess because of the Heavy's rigidity.