IMHO, you are making too big a deal of this. It is likely to be much easier than you anticipate. After reading the great tutorials here by SD, I did most of the mods discussed here and others with no significant issues. And I am not a gunsmith, nor do I play one on TV. To heat the magazine tube/receiver, I bought a cheap heat gun at Habor Freight for less than $15 (cheaper than many hair dryers and more useful!). No need for Visegrips or vises etc in my case. One guy held the receiver in a towel while I turned the mag tube with gloved hands. If there is a trick, IMO, it is applying moderate heat slowly to avoid overheating. It took a few minutes because we were avoiding rushing the process. I chose to direct most of the heat on the mag tube where it joins the receiver, since the mag tube was "disposable." It is possible that some mag tubes are easier than others to remove, but overall, very doable even for a novice like myself. Go for it!