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Hmm !!! Approval or not , increasing the gap by any means is counterproductive as far as compression release for easier starting is concerned. The bigger the gap, the less effective, whatever the release method. That said, a really knackered ( technical term) engine may benefit from all the compression that can be found. AKA an elegant, albeit unorthodox, engineering solution!

We have just completed a LED light upgrade on our Bolens HT20 using sealed units similar to the originals, it makes a huge difference. We created a video of the project

You will also find that older Briggs & also Tecumseh engines around 5hp open the exhaust valve slightly on compression. As the engines wear this can cause starting issues due to low compression. On OHV engines I have countered this by increasing the gap on the exhaust valve & on side valve engines I have removed the exhaust valve & ground a bit off the valve stem (not too much). I am sure Wristpin will not necessarily approve of this practice but it has worked for me on several occasions.