Yoshi Box with a 5% increase on Low Throttle has cured it.
The bike feels much much better at low speeds. To give you an example, there a tight left bend into my street. Before I had to either clunk down into 1st gear, or feather 2nd gear, as the revs are around 2K rpm on the corner. The bike used to jerk all over around the bend.
But now, I can leave the bike in 2nd gear, let the revs drop right down to 1.5K rpm and just use the throttle to get me round the same bend.
If anyone need Yoshi Box Adjustments done in the North East or are willing to travel, for a small fee, you can come and use mine.