Many thanks Mikep and the other posters on this topic.
The wiring loom on my 350 was the original and becoming quite brittle and some connectors were not at their best. I managed to get a new loom and was chuffed how well it was made and fitted.
Out for ride and it was gutless - any uphill sections and it would struggle to maintain speed but would pick up again when you eased the throttle back.
Just like Mikep, something must have changed but it had been running perfectly before the loom change. All settings re-checked and everything fine.
THEN, I saw this post and remembered removing the toolbox and my piece of ply wrapped in muslin (that's with an N on the end) fell off the shelf whilst replacing the loom. I use this ply for times when the side stand might sink and the muslin just stops it from rattling and can be used for wiping a wet seat. I shot out to the garage to check under the seat and sure enough, the muslin was partially covering the air grill. Suitably re-positioned and tested to the red line up hills.
You've made an old man very happy again! Ta!
Ian
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