I purchased a dolly and track from Long Valley Equipment but am having a problem with the track as it's not smooth when going over each part of where the tracks connect, I tightened, loosened, tried everything but every time you go over where each dolly piece connect it's bumpy as heck. I'm sure they would not sell track that would not be 100% smooth so am wondering if there is anything I can do? I've used a longer solid piece of PVC pipe in the past and that works great, but I wanted a longer track and one that would go in a circle.