I recently purchase a Stella 18000 and 400yds of 80# OTI Depthfinder line. The line is shown as 0.40mm diameter, which is the equivalent of 17lb test mono. The Stella 18000 spool capacity is supposed to take 415yds of 20lb test mono. So 400yrds of 17lb shouldn't be a problem. But, I started spooling under tension, but I can't imagine the entire 400yds will go on this spool. It's filling up quickly! Has anyone faced this situation??