Okay I've decided it's time to bite the bullet! I'm looking to replace my chains, sprockets and bolts! Hoping to reuse my wide pads! My questions are who has the best quality aftermarket ? I have heard mention of v track! Also would a machine with a blade have the same tooth sprocket as a machine without? Any idea what I could expect to pay? My machine is a cat 311b with 41 pads and 21 tooth sprockets! Thanks..