Don't forget people, it takes about 10,000 cycles (with paint please!) to bed a marker in.
The inside of the reg and body are all anodised and this has to polish up, which will wear the o-rings etc.
Once it has bed in, I bung new seals on then it only takes a few hundred cycles to bed in the new o-rings, then the gun is bed in properly.
However, you shouldn't notice particularly bad efficiency etc.
Once the marker is beded, you may find that lowering the dwell to 14 from the stock 16 may help, but as with all adjustments, do it over a chrono and remember that temperature, will affect how the marker behaves to a certain degree.