My tail is very easy to remove and reassemble, since I have a low mount and shaved grab handle. So here are a few pics and some tips.
Here is the the L/H side of the grab handle mount. It is made from 1/8" plate steel welded to a piece of box steel that comes off the main frame. It is just lap welded on the sides and bottom, so not the best & sturdiest design.
I don't know exactly where yours has cracked, but odds are it's towards the aft end, or maybe one of the welds or weld nuts has broke loose. You will need to get it welded, and in my opinion you should never weld on a bike with the battery and ECU installed.To prep the bike and get it ready for welding and repair....
- remove the side cover
- remove the battery
- grab handle
- rear cowl
- plate bracket
- signal lights
Next drop the aft section of the undertail tray. Pull the two button head bolts under the grab handle mount plate, followed and two bolts that attach inboard of the muffler mounts going up from the bottom into the frame.
The undertrail tray will sag down allowing you to sneak the ECU out the R/H side from under the main frame rail. Slide the four relays off there standoff's to get a little extra harness length then unplug the ECU two main cannon plugs and remove it from the bike.
It can all be done easily with minimal tools & I would do a practice run at home ..... just tear it down and figure out what tools you need. Then put it back together and take the tools with you to the welding shop.
You may as well have them reinforce it a bit when they are working on it, just have small triangle brace cut and welded to help support the aft end of the grab bar mount plate.