I've successfully rolled over 3 previous employer's 401k accounts into my current rollover IRA. But this latest one has me somewhat challenged!They sent me the involuntary distribution letter since the account fell a few cents below $5k. Fine. I filled out the forms with all the directions to go to my rollover IRA.1. They ask for letter of authorization.2. Fine. Rollover IRA custodian says 'account transfer form in' fills that requirement.3. I fill that out. Now rollover custodian wants a copy of the paperwork I sent to 401k for distribution/rollover instructions. Not just the last account statement they requested and got with the transfer form.4. I'm working on that now.Meanwhile 401k custodian says if they don't get everything in about 30 more days, they will issue check to me with taxes withheld. What can I do in that case?Can't I just write check for the full amount (including what taxes were withheld) and send to rollover IRA custodian with my distribution documentation? Then it will come clear next year when submitting this years tax return?