When I did my dynamic timing a few days ago I did it for 1/4 initially so today I spent over an hour trying to get the timing marks for 2/3 spot on at the same time.
A long winded process as one of the modules was close to it's limit on the clamp screws so undeterred persevered by way of moving the 1/4 module on the back plate then re-timing to 1/4 then again for 2/3 - repeat until you start to forget when it's too advanced / too retarded.
Conscious of not spending too much time with the engine running & not cooling with movement I made most of the adjustments on a stop start basis. I have it pretty darn close for today - I will check it again tomorrow when I can stand up straight again. It was towards the end of the process that I sat in a chair with the bike lift raised to it's highest position.
It's not an issue when you rev the engine but at idle speed there does seem to be quite a bit more backfiring from the exhuast system than I would like- it's a Motad system what is the most likely cause please?
My carbs have not flooded with no petrol smell evident - engine idles at 1200 rpm whilst checking the timing in the F position.