One tip for those who want to try it;
Have a pot of warm to hot water ready. Dunk your lids in the water for 20-30 seconds, remove and paper towel dry then quickly seal with the Foodsaver or other unit.
The hot water will soften the sealer ring and provide a much longer lasting seal.
Thank you for that advice.
I did the vacuum sealing thing and found some of the lids just didn’t seem to take the seal well and that probably explains it.