I your having trouble starting you bike a bigger starter may now be the solution. If you can put 1.4 kw of electric into a starter motor that will be sufficient to throw over the engine.
Again some starters are wearing out early because oil leaks into them from the primary.
I think I have a 1.4 kw on my 2007 K-9. The starter motor has
never been the root cause on my starting problems.