Check your chainstay clearance. Just because it clears with the bike at rest doesn't mean it will clear in motion. My skyliner has about 1/8'' without the tensioner so chain slap shreds the stay if I leave it out..
If u take a link out of the chain to run it "real tight" it's going to put unwarranted stress on other components.To me it's better to ditch the supplied chain-tensioner and opt for a much better one....something that's originally meant for a trail bike/trials bike.
I use a trail bike chain-tensioner and once setup u never need to worry about the chain again.Also use a KMC 415H motorcycle chain....that's MUCH better than the crappy Chinese original.