Thanks guys!!
Before I purchased the rod, I tested it with a few reels from a 3000 to 5000 series and they all fit (shimano, daiwa and penn brands).
I think it's due to a cheaper (no name) brand I have (although cheap, they work really well & smooth with 10+ bearings). It is a 3000 series and only a little bigger than a 2000 series (spool wise), it's just the reel connection of these cheaper reels that are somewhat extra large.
The reel holder is just a little small, I will try and file down the edge of the bottom end to have it fit. The top end fits fine.
Thanks for the feedback once again!!
Regards,
Donny