The 110 is very well known for it's lifter issue. As I read about this problem for years I have listened to the folks that do lots of engines, and work on them almost everyday. It is a combination of things, so when the time comes do yourself a favor and address that combination: Oiling, Lifters, Cam Ramp, Valve Spring pressure.
I have done a few like this and I like the results. As far as the oiling is concerned, put in a good cam plate and oil pump. Personally I like S&S the plate allows for better oiling overall and you will also notice a difference on your oil pressure. The other stuff, everybody likes what they like and there are lots of good products.
Good Luck