Righto learned ones !!!

My 07 now has 2500k's on her & I'm more than happy ----- but, it appears to have a mechanical term "fluffy spot" around 4700-5000RPM once you come off the throttle & gently feed it back on. My previous 05 had no such issue. She's fitted with Evo's & has been tuned for them by the same shop that looked after my 05 for 50,000k's. Anyone know of a fix, I'm not going to buy a PC111 to cure this issue

The rev range you mention is where "closed loop" occurs, so hovering around that range could cause the problem.

I noticed it a lot on my 06 SD but not so much on the 08 SDR - basically opposite of what you are experiencing !