You probably have already checked this, but I ran into a situation where one of the bolts was a bit long on the right side and was hitting the catalytic converter. I have not had an issue with my bars, center stand or skid plate since installed.
I installed the Engine guards, skid plate, and half of the center stand all at one sitting.
I ended up with a few M8 bolts, M10 bolt & nut, a washer, M8 bushing & spacer, etc.. spares (yellow square) or for older Gen 1/2 Versys model differences. So I had a small handful of spare hardware. I noticed I had two spare M8 bolts, but they were slightly longer than the M8 bolts that came with the center stand right side bracket.
The too-long spacer is on the long M10 bolt below. The smaller body spacer is for the M8 bolt, the bore is too small for the M10 bolt.
I too noticed the limited backspace room from the back of the center stand left side bracket to the muffler/catalytic converter so I didn't use the leftover M8 bolts (too long).
Customer service responded and confirmed receipt of my email about the parts in less than 24 hours, Then I got another email the following day that they were getting the parts request ready for shipment. The parts shipment came through Amazon (the engine guards and skid plate was ordered through AMZ). Missing parts are on their way, ETA his Friday.
No mention of the correct length spacer. I shall see when the parts arrive. If I don't get the correct spacer, I'll just cut down the long one to the correct length.
The spacer is supposed to go between the left center stand bracket and the engine.