I've just started watching some of Colin's videos. There is a lot of very good information. But, if you do this you are now a TEST JUMPER. His idea is your putting back something that was there and has worn off. But he does know what was there, how much, etc. Not quite sure what problem he's trying to solve. But you may have hard openings, slow openings, longer lasting lines, shorter life lines, wear out grommets. ALL BETS ARE OFF.
In the days of dacron we used to do crazy stuff with it. Soap, various sprays, etc. Mainly openings were getting too slow. But remember slow then was what today's jumpers call a hard opening. If our canopies in the 80's came CLOSE to sniveling as long as today's designs they were a malfunction and cutaway. The first time I jumped a canopy designed for one of these long sniveling openings the owner warned me that it would take 500 to 800 feet to open and to not cut it away.