I have 1,200lb rated spring bars, so I have a little feel what your additional 200lbs must introduce to the process.
It's recommend in most cases to raise the TV/TT with the tongue jack before attempting to engage the spring bars and use the cheater bar no matter how easy it is (safer). Always keep a hand on that cheater bar until you have the snap-up bracket safety pin in place......, have heard about some nasty accidents about the snap-up bracket releasing and the "spring bar" taking flight.
Also, general rule is that if anyone can engaged their WDH spring bars without the aid of a cheater bar and/or raising the tongue jack, then there is a high possibility that the WDH isn't adjusted correctly.
I'm upgrading from a single 12V Marine/RV battery to two 6V Interstate Deep Cycle batteries this week, so I plan to re-check my loaded tongue weight with my Sherline scale. Good chance I may have to go to a heavier spring bar......will let you know.
2016 GM 2500HD 6.0L/4.10
2005 Jayco Eagle 278FBS
Reese HP Dual Cam
Putnam Class V