Traxxas 2.5 and 3.3 clutch upgrade

[HDRIDER56]

I recently purchased a Hot Racing 3 shoe clutch for my Jato 3.3 engine. My 1st issue is it didn't come with the nut with the groove for the spring arms to go in, anyone know where I purchase one, I'm not seeing one online? 2nd issue i just seen some reviews that this clutch isn't the best option for a 3.3 engine, can anyone give me any 1st hand user advice on this? Is this a good upgrade or did I waste my $$$ what are my best options for my engines?
Thanks in advance

 

[fstnd]

As a non-racer, I'd say that the only real nitro upgrade is a new engine or pipe. The clutch just exists so your engine won't shut off at idle, and of course it has to engage somewhat smoothly and not vibrate

 

[CertifiedMike]

Lets back it up... why did you buy a new clutch in the first place?
I never had an issue with my stock set up so felt no reason to upgrade really.
Springs and shoes are common upgrades. They change how and when your clutch will engage.
Usually a race clutch is about saving rotating mass along with good engagement. It needs to be able to disipate heat quickly as well.
I have not purchased Hot Racing products in a long time. Last purchase I didn't feel like quality was the best.