Yamaha engineers sure designed a lousy engine oil fill hole, if it wasn’t for that we wouldn’t even be discussing this. If the new funnel isn’t to expensive I might actually buy one otherwise I will stick with the old cut off bottle method.
Many years ago I changed oil on a trip once but these days I don’t worry about it at all, have ridden to Alaska and back which for me is about 10,000 miles without changing oil and it doesn’t bother me at all. My Goldwing has had lots of 10,000 mile oil changes, one was actually 12,000 miles and it still runs like new after 556,000 miles.