Yes, you need to get the front weight back to stock. You can check this by continued trips to the scales, or by measurements from the ground to the front wheel well (fender).
200 lbs more to transfer is quite a bit. This can be a chase-your-tail type of thing. Change the head angle, and now the trailer isn't level. Change the brackets, but still not level. Change the head-height, and now the WD is off again.
Instructions will usually give you clues on what to change first under different conditions. If not available, just block of a Saturday to tweek things.
thebrakeman ('70), DW ('71), DD ('99), DD ('01), DD ('05)
2004 Surveyor SV261T (UltraLite Bunkhouse Hybrid)
2006 Mercury Mountaineer V8 AWD Premier
Equal-i-zer WDH (10k), Prodigy Brake Controller