Hi. I'm new to trials and have got a gas gas txt racing 225. I'm finding that at low revs and in 1st gear the bike sometimes feels jerky, almost as if I was in too high a gear. Just wondering if anyone knows what could be causing this. I notice the chain could do with tensioning, could that cause it or is the gearing all wrong? It's got 9/48 sprockets. I've fitted a slow throttle too but find it very responsive despite the slow throttle. Any ideas/help appreciated. Cheers