freezing RT

To help that problem, get an x-chamber, or remote, or Stabilizer, or anti-siphon, or all of the above.

To instantly make the problem go away, get nitro.

CO2 + high ROF = bad

The RT hates liquid.  Or rather, the RT doesn't care, but the gun itself hates the liquid.  Liquid CO2 + almost any paintball gun = bad.

People often have an easier time sweetspotting the RT with CO2 due to the higher output pressure from CO2 tanks.  Nitro works great with the RT, once you re-tune and re-learn the RT.

But if you aren't freezing, and are sweetspotting well, I would stay with the setup you've got.  While there are other benefits to nitro, the main benefit (by a large margin) is the lack of freeze.  If freezing isn't a problem for you, don't fix what ain't broke.

^^^^^  Interesting theory - hadn't heard that before.

But, ultimately, the real question is what works.  My RT was almost useless on CO2 because it would freeze so fast.

maybe you need a spring kit, try the maddman spring kit

I gotta Agree with Clark Kent on this " CO2 + High Rate of fire = Not that great" ,,,, BUT ,,,

Tippmann's are probably THE ONLY marker ever designed to operate on liquid CO2 (the 68 Special , Talk about a Gas Hogg !! ) , and the production Tippmann's of today will handle anything a CO2 bottle can throw at them . They werent designed to shoot liquid exclusively , but they CAN handle liquid  CO2 better than any other marker out there .

I've never used HPA , and had very good , if not great performance from the stock propellant setup tippmann uses , I can shoot high RoF as long as thats not exclusively what I shoot . With the 98 Customs I've owned , after a while , I will get some minor shootdown and loss of velocity , thats my signal to back off for a bit if it happens .

The more acessories you add to your marker , such as the RT , despite the claims of using  "Excess gas" , they do use more CO2 to operate and will cause more cooling of the CO2 than a stock set-up . Same is true of the  "Cyclone feed System" , anything that Uses gas,,,, USES GAS !!

Tobert , you've got the Car stock on your marker , that can change the spring tension and behavior of the 98 when under High rates of fire , my suggestion would be,, to take the Car stock off , and see if the same symptoms exist . This will narrow down the cause of the behavior of your marker and give you an idea of what you need to do for a "Fix" . It sounds like you are experiencing "Shoot-down" way too early .