I haven't got around to testing those caps yet Norm but I did have a good look at them and couldn't see any problems with them.
The last old cap I used after fitting a viton tipped fuel needle worked perfectly ,I left the fuel tap on for a month and it didn't flood and the full crank motor started first go every time.
A good test on the condition of a 2 stroke motor is to turn the fuel tap off when running and if the motors revs increase while the motor runs out of fuel there is a leak somewhere ,usually crank seals.
Yes I knew the kickback had to be a weight problem on the crankshaft as whenever I start a PT without a blade plate they kick back but with my victa pro 460 that has a heavier weight standard , when I remove the blade plate from the pro 460 it doesn't kick back.
Lead is a little expensive ,I guess you can get some from old car batteries but I wonder if concrete would be heavy enough or fill the void with ball bearings but the pulley would need a cap welded on to hold the ball bearings in.
The only problem is Fibreglass is NOT impervious to petrol.. It soaks along the miniscule cracks.. and is dissolved by petrol.
I've used fuel tank repair, Epoxy putty on plastic and that is good but costs a bit.
Norm I wonder if you had bad primer caps , it's not uncommon for manufacturers to make parts with Porosity leaks / defects but you would hope with quality control those parts are thrown out , sometimes the problem is when people take new parts out of the bins and sell them as working parts.
It would be good if you don't get any problems from the Amazon Caps.
There should be some auto drive 2 stroke motors here with a pulley ,I had a look on Saturday but didn't see them but I should be able to find them.
