F250 Power Stroke Brake Controller Gain Question
So I try to adjust my integrated brake controller per the Ford instructions pulling a Wildwood Heritage Glen 38' fifth wheel. Level road, 25 mph, apply trailer brakes only etc. Instructions say to basically increase the gain until the trailer wheels lock up, then back off from there until they stop locking up...Then that's the gain setting to operate by.
But, I run it all the way to 10 on the gain and still no lock-up. I'm not surprised as I figure this is alot to expect out of this entire system on a dry hot Summer road. Should I really be expecting these four big electrically braked tires to actually lock up on hot asphalt?
So how do I know what gain to leave my IBC on then?? To me the braking seems the same at 5-6 as it does up to 10 gain. It does slow and stop the entire rig at 25mph within a relatively short distance but again, I'm not sure what gain to leave it set at unless they should lock up of course and I got another issue I'm unaware of.
Brand new camper and brakes, I'm new at all this so the learning curve is plenty steep. I have heard this controller won't allow you to lock-up but others with the same tow vehicle do see their brakes lock and that info is also contrary to the gain setting instructions. Just wondering before I hit the hills, it is camping season and I hate to have my camper back at the dealer for service unnecessarily this time of year.