[old new biker]

Same problem here.
The Easy Bracket mounting bolts were mutch to long, so out came the old saws-all, and the problem went away.
I simply cut off the excess length of the 4 bolts, and there are no worries at all of puncturing a tire.
NOTE: Remember to have a nut on the bolt inboard of the point of the cut, before actually making the cut. This way, when you remove the nut, afterward, it will chase out the damaged thread making it much easier to put the nut back on. After making the cut, file the cut end flat, and file all around the tip at approx. a 45 degree angle to remove the excess burr around the thread. Remove the nut, and try to restart it on the bolt. It should work fine.

I also had a spacer problem with my Bestem Backrest mounts. There were spacers to put between the back rest legs and the large flat plate bracket that mounts to the fender, but they provided no spacers to put between the main fender support and the fender mounted back rest bracket. I called CruiserBackrest.com, and they told me that the bracket is supposed to fit tight against the main fender support. Most back rest mounts come with spacers so that you do not end up with a closed crevice, between the two parts, that can hold dirt and other stuff that could eat away at the crome and cause a big mess. Also, the main fender bracket curves inward from front to back, and with the back bolts tight, the front ends of the bracket stick out a full inch away from the main fender bracket. Forcing that 1/4" thick,chrome plated, metal fender mounted back rest support bracket to make this curve did not look wise.

Stainless Steel washers from Home Depot did the trick. Also with washers you can put more on the back mounts and less on the front mounts to keep the finished assembly paralell from side to side, front to back (As I mentioned above, the main fender support curves inward from the front bolt to the back). I used 5/16" St. St washers that are approx. .045" thick. I put 4 of these washers on the front mounts, and 9 on the back mounts. You can put how ever many you want, but a differential of 5 more washers on the back bolt than on the front bolt made mine come out paralell.
NOTE: You will want at least two washers on the front mount, so that you can get past the indent in the main fender support, and then have a bit of space between it and the bracket.

I hope this helps..............