When we were first reporting the "250 FPS Forever" problem - I tested the hammer with lube first - and it was erratic. Sometimes the marker shot fine - sometimes - not. It was terrible in the T2 due to the lighter spring weight.
I used Dow 33 - erratic.
Hater Marmalade - terrible.
Paint on hammer - terrible.
I am willing to bet my Hitman Mod that this was the issue.
Next time post up in the CCM forum - and welcome to the family!