Hopefully you did not get heavier fromt springs , as stock they work very good. The biggest thing on a trials bike is the front and rear need to work together.
Do a you tube search of Jim Snell gas gas video`s. The bike is pretty much basic two stroke, except the clutch pressure plate only goes back on one way. It is marked with a notch if my memory is right.
The bike works well, stock out of the box. You never said how big you are. The rear shock is fairly soft. You might crank it up two turns if you are 220 plus. Other wise the suspension needs to break in. One or two rides is not enough. The bikes works very well , so just enjoy riding it for awhile.
By the way you can order the seal for the jet tower from OKO carbs. Slightly larger and seals better. And yes when the passages are bad the ildle will search. Pull it apart.
Mains and the rod bearing would make noise just running. Pinking it could be, but the fuel pump could just be going lean with an air leak. It is a crap system only found on the Sherco. (Unless you count snowmobiles.) i would use an auxillery fuel tank just to rule out that whole system.
Beta could just do a suspension upgrade and it would do wonders for the bike. I love my Beta, but my son just got a TRRS 300. Everything about his bike is better. Better power, suspension, brakes, clutch, and it balances way better. Looks to be a brand change in our family. Just as I was getting used to my new dealer.
It is in awesome shape, but the early `95 model actually had water cooled center cases. Which had a corrosion problem. You might be able to check by VIN number. Trials parts USA would be your best friend. I would find this out soon as it would be a shame for this bike to be a lemon. They had a kit that blocked the passages to the lower cases. Plus side is you have the later model fork seal holder. The earlier model had green dust seals, This to was an issue that year. They were a great bike for the year.
Install a new condenser. The body to the frame (So it is grounded) mount it by the coil under the tank. Just splice it into the black wire going to the coil. Sure beats pulling the flywheel off!
Not the first starting problem. We had a sponsored rider at our National that took him forever to get the bike started at a section. He has been riding Vertigo since they came out and previously he rode Ossa. Personally they can take FI bikes and crush them all including Honda`s. Not worth the time or hassle. Trials bikes were meant to be a simple machine. Besides this problem the Vertigo power is impressive.
There is no reason to do either mod. They only went to the Del Orto one year and it did not carb well. In 2008 they had a Keihen and it ran the best. I had three 2001 Rev 3`s and they all worked great. But then again they were new.
You need to make sure what carb you run. We also need to know what elevation you ride at. Colorado`s a big state! Most likely it is a float level/idle speed problem.
I just got a TL 250 running this afternoon. Stock carb. Been sitting 4 years or more since it was last running. Just replaced all rubbers in carb and cleaned it. In 1982 I did a 300 kit and do not remember jetting being a problem. I also had the first TL 250 in our state as poor me was sponsored on one. But it was free.Good luck.
