I did the heat thing early on, when they still recommended doing so in the instructions on the bottles (I never really noticed any difference either way). They havent had that recommendation in the instructions on the bottles for quite awhile now, and last I saw mention of it, was on their website, and it was aimed at long term storage.
I think many that have problems with gumming are not using it correctly.
I tend to agree, to a point.
I think a lot of people do tend to over do things and as with any of them, to much is usually not a good thing.
With Frog Lube, I pretty much always followed the directions to the letter, and only ever used a very fine coat of the paste as a lube. Basically, I got a little bit on my index finger, and rubbed it between my finger and thumb, and then lightly applied it to what I felt needed it. You didnt see the paste, just a wet shine.
Where I noticed the sluggishness, was with close fitting things, like my revolver cylinders, etc. My autos for the most part, were never an issue.
One thing I noticed towards the end of using FL, was that the consistency of it seemed to be changing, and the last few bottles seemed a lot more watery than the earlier bottles, almost like it was being watered down. I was also wondering if that might not be the reason I was getting rust while using it.