Sounds like you are getting two different forms mixed up... Not a "K1", but rather your "Schedule K," it is part of your 1120 just after the "schedule J." I think it's on page 5 of your Form 1120. Double check, and you'll see "line 29c." Change it from "NO" to a "YES." Read it, you'll see that it triggers form 4626.
Happy filing!!
Al
