Metal bushings and new shims should be definitely on your list. Anytime one goes through the trouble of opening a stock TM mechbox, one really should just take that little extra step of bushing replacement and reshimming.
I'd leave the stock nozzle in unless you know something's seriously wrong with it. Instead, consider adding a bearing spring guide.
So the shopping list looks like:
- Shim set
- Metal bushing set
- MS100-equivilant spring
- Bearing spring guide
- Tightbore
That'll keep it under $100 and get you around 320-330fps.
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