I was initially under the impression that you were able to get at all the packing via the two window areas shown in the pics. Does your finished product have 4 windows, or did you go with two and leave some packing behind?

Cheers to ya...

Yeah, sorry, I didn't answer Q3 very clearly. Two windows, as per the pictures, is sufficient to get all the packing out. Takes some doing though...

Nice job of sharing Caravan_Monster. It will be valuable to many of us - thanks again!

I took some photos to show how I went about cleaning and repacking

I cut the windows here:

and here

I used the drill (with depth gauge) and hacksaw instead of cutting disk to cut the windows, to avoid damaging the perforated tube inside. A hook was made from stiff wire to pull out all the old packing. Once the packing was removed, I heated the inside of the perforated tube with the gas burner. The oily gunge caught fire and was left to burn out. It was then easy enough to shake the soot out and get everything reasonably clean.

It was then repacked, taking care to get packing into all the corners:

Then a paper template was used to get the right shape for the plates to go over the windows. Silicone and pop rivet:

Hope this helps

thnkyou so much for this! <3