3b. Don't forget the inside of the wheel spats. If the strip is very muddy
Backpacker makes a good point here.
If you have spats fitted, also check that they are not jammed with grass, as this combined with friction has caused fires in the past.
Good grass runways are delightful (e.g. Fowlmere in the late 90's, ealry 2000's when I lived in the UK), but poor ones are not
Having scanned the thread, there is plenty of good advice, enjoy.