Maybe just nip up the slipper nut a bit(eighth turn at a time). You want it to slip a little then go but it shouldn't squeal. If you tighten it up too much it will wheelie off the line on high grip like carpet. Have a look in the manual or on google for tips on adjusting the slipper.

Put my 9t in mate but gettin a what sounds like a squeal, any ideas?

All delivered mate, can't wait to get this baby up an running