Rivets,I’ve switched to Opti-2 for all my 2-cycle equipment with absolutely no problems.
Here's what I use for my 10525's.I was able to successfully replace my LB starter spring this past weekend due to much advice from RIvets. Thank you. A Teflon(r) spray dry lubricant was used on the spring before the wind-up into the metal tin. Everything now works as it should, and I believe it is important for posters to publish their conclusions so as others can pick-up some key learnings.
Now on to resourcing the ideal modern/synthetic 2-cycle oil due to LB oil being fairly rare.
Rocky