I did the same as you myself, primarily as I'm reliably informed that I have the potential to be an anally retentive arse.I'm going to apply it myself as the ONLY way of knowing the job will be done meaningfully, and while saving myself c£350!
K
I recommend some disposable overalls, eye protection and WD40 to get the stuff off your face! It seems to be doing a good job though.
I haven't watched the video but I predict that the clear Dinitrol fared well?
A