This is a technical question that I might have a work around but I want your opinion. The Warp Engine has a rule Steady as she goes that gives +20 to warp encounters on table 7-4 of the Core Rogue Trader book. With Navis Primer we have a new table but with an inverse of what the core rule book has. So in other words all the good things are close to a roll of 00 rather then 01. I thought the simple solution would be to switch it to a -20 for the new table. What do you guys think? This Warp Engine is found in Hostile Acquisitions for your information

Makes sense to me.