RE (India) have several different center stands, all of which LOOK very similar but are of different lengths. It can be an issue with the old Redditch Bullets too, especially when people start fitting different size wheels to what the factory fitted.
My 1961 350 came supplied with 17" wheels, but a previous owner converted it to a trail bike with 18" rear and 21" front wheels, which I assume is the size you would be using. To allow for the taller wheels, PO had had thicker feet welded to the stand (aluminum in this case) which gave him the necessary height.
When I bought the motorcycle I found that I'd have to change the front end, he'd fitted a set of disk brake forks with a badly modified drum front wheel. Having a set of Indian Bullet drum brake Bullet forks to hand, I fitted those and found this happening.
For some reason the disc brake forks were a good 1½" shorter.
A friend on the MBR forum donated an Electra-X center stand, these are longer than the iron-barrel Bullet's stand to take account of the longer rear shocks on that model, and it looks like it will be long enough to sit the bike at the right height.
If you're binning the center stand that's on there, not an issue, but if you do want to have one, part number 801456 is probably your friend.
A.