Roll it/them down to one end or the other of the tubes. The blobs may stop at one of the spacers or against the forend lug inside there.
You'll have to guesstimate by ear where they are,,it's really not that hard to do.
Then clamp the upper and lower ribs at that point and going away from that point for a distance of a few inches.
I usually place a wire twist clamp around the tubes also at the point so they don't spread outwards.
Now with the bbl's horizontal hanging from the bench vise (I just jam one chamber onto a tapered wooden plug that's clamped in the vise),,,heat that area of the tubes and ribs (top and bottom) where the little bastards are sitting.
No need to add flux to the outside. You are just heating enough to re-melt the existing solder and in doing so those little loose scraps inside which when they melt will flow into the surrounding solder joints and dissappear.
Don't do any clamp tightening,, don't over heat or get in a hurry to melt the soft solder and cause the steel to change colors. That's a sure fire way to burn the surface and ruin the solder job and then you have a repair job to do.
Let it cool on it's own.
Unclamp and unwire.
Wipe down and you're done.
I've seen people squirt loads of glue like Superglue and other stick'um into the weep holes hoping to snare and glue the things into place. But it doesn't seem to be a successful way to go about it.
One expert told me he pumps grease into the void through a enlarged weep hole(s) using a football inflating needle type setup. Works the nuts he says.
I'll pass on that one as I just pass it along.
