which gearbox?

[Muttley McLadd]

You will be fine with an SX200 box.Been using that box for the past 10yrs on my GP.Used to use Taff springs,got Readspeed springs in now.

But you're also using a well tuned barrel that will pull the gap

Without modification, a Rapido 225 isn't likely to have the power to rip the skin off of custard

[servetakid]

Good for what? Why would advice on gearboxes be given when you dismiss the advice given above? Listen to what's being said

I have not dismissed it, if it is as shockingly bad as people on here say. I can always think about changing in the future.