You could just use washers on the bolts or cut down the existing bolts a little.
Using the washers as spacers would work fine and is reversable.
Ditto. They will overnight them to you. Rekluse has some of the best customer service on earth.
Also, DON'T FORGET TO TIGHTEN THEM DOWN!!!
If the clutch drag increases noticeable shortly after you were in there, stop and look to see that things are tight.
One other thing: I couldn't get the gap right with the recommended setup. Always too much clutch drag regardless of how many "ticks" past one turn I went. Installed the light springs (blue ones, as I recall) on both sides and it resulted in perfect engagement.
I found some shorter bolts today and got the cover on. I tried to do the break in procedure but found that the clutch was really grabby. At first I could not get it to idle in gear, and even when the clutch lever was fully in the clutch was still grabby. After I rode it around a bit it has improved. I may try changing out the springs next to get it perfect.
EXACTLY the symptoms I had. I knew I would have to change springs when I couldn't even get it to completely disengage with the lever in. With the spring change and 1 turn + 2 ticks it was perfect.
Don't know what to say about your screws. My lengths were just fine.