I have a "new" Super Tigre 45 that I have had about 25 years. Since I haven't flown much the last few years I put it on a trainer to sharpen my skills. Now I remember why I switched to O.S. a long time ago. The S.T. started instantly and ran until I just touched the needle valve. It died and now won't hold suctionfrom the tank. I removed the carb to make sure nothing was plugged. It will draw fuel but only for a moment. This reminds me of the Super Tigre inflight flame-outs of old. I have a new O.S. 46 waiting in the wings if this S.T. won't run.