Shorty's for BMAX-2 MR ??

[Nige55]

Could do with some help and advice on shorty choice for my almost finished BMAX-2 MR, I've been trying to get some shorty's for it and a few I've tried (LRP and a cheaper voltz shorty) don't fit (without some serious grinding).
Would really appreciate a few options of ones that fit without modification.
I'm not looking for top end spec either, something around the 45-60 GBP mark.
Thanks in advance !
-Nige.