I almost forgot to post this. Here's the link to download the Bruder Cat drive sprocket STL file, if anyone needs it.
https://www.thingiverse.com/thing:2616603
Here's the link to get the RIGHT hand side tire for the log skidder. As of yet, there is ONLY the RHS tire. I'll be getting the B.I.L. (brother In-Law) to help me make the LHS tire. He says it's s simple fix. As they are now, IF I print 4 tires, the chevrons will be pointing forwards (as they SHOULD be) on the RHS, & would point backwards on the LHS.
https://www.thingiverse.com/thing:2616612