Yamaha 125 tirke Problems...Help!

[Furnace]

I have a 1981 yamaha 125 trike and it runs good, Idles, and works good on the level and going downhill, but when strain is put on it going up hill, it dies. any bit of strain at all and it dies.
It sounds like a gas problem, but Im thinking it has something to do with the spark, maybe being flooded when it comes under strain....any help is greatly appreciated.

Thanks

[Unclediezel]

Loosen the gas cap and see if it clears up.....

#2 ---those clear tubes that come off the carb and dissappear to no where are vents. make sure they are clear ---or the bowl wont fill to capacity and will cause exactly what youre describing.

[Furnace]

I cleaned the jets, and still no go...Its getting air too....I have no idea what is causing it. Only up hill...down hill eveything is fine.
I might just get a new carb, hopefully that will work.