Tuning the RT

Don't do something foolish like damaging the marker.

All you have to do is find the tiny adjustment screw sticking out of right side of your marker near the rear. It had the little gas tube running to it. Tighten this screw in to start. Then, slowly (like 1/4 turn) unscrew and try to get it to bounce. Slowly take up the slack in your trigger until it discharges, that distance you covered with trigger pull is as far back as you want to pull it. Keep turning the screw out until the rate of fire is what you want. On mine it seems easier to sweetspot with the screw in further, but shoots faster with the screw out more. Eventually if you loosen the screw too much, it woun't respond, find your range and stick the screw in your prefered spot. On mine when I dry fire, the rate of fire is a little faster then when it is loaded. Therefore, I would set it with only gas and no paint, then load some paint and fine tune it.

If this doesn't work go back to your proshop and vent your frustrations to them, since they didn't install it properly.

I like my RT because I can go from semi to full auto without changing anything. As you start you will most likly shoot in bursts and have to release the trigger and bring it back again once it stops firing. After some practice you will be able to sustain full auto as long as you want. It's worth a little practice. When I first got mine I noticed in my next game that I wasn't shooting as well with it as I had when I was testing it. This has to do with me and my trigger control, not the RT. Just get some practice with it, it's not hard... soft trigger finger!

I am not sure how it looks on the 98C but I can tell you about my A-5.

The adjustment screw is the one that is closer to the rear, just above the grip (not the trigger group.)

The screw and screw head are tiny for the adjuster, the one to ignore is bigger.

Both of the screws on mine are silver. When you say "black one" I trust you don't mean velocity adjuster... read your manual or get one from this site.