Re: Jerky Acceleration.
I would also suspect the MAF.
I have had similar problems with my Cloverleaf which developed into a severs loss of acceleration above 3500rpm and kangarooing at low revs until warm. I made all the usual checks then in desperation disconnected the MAF. Problem solved except for engine fault warning light on dash, reluctance to decrease revs quickly.
I have run disconnected for some time, reconnection and fault immediately returns.
Am biting the bullet and picking a recon unit (£175) from Mangoletsi who say this is a relatively common problem. (Present mileage 85,000)
Excellent pocket rocket when all working.