Tragedy! Bambi fell off jacks stands!

[Phantom]

A post to warn others. Had my 2007 19' Bambi Safari up on jack stands for her first wheel bearing re-packing. Going to 'save' myself $100 from dealer service. (after buying parts... it was a $65 savings). Had both wheels off... trailer on smallish 4000 lb. jack stands (8" triangular bases). The left tire was a very tight fit coming off... between the drum and wheel well. Got the bearings well-cleaned and re-packed... no problem. Re-installing the left wheel.... very tight to get back into the wheel well. Raised left side an inch or two more with hydraulic 'bottle' jack... BIG MISTAKE! The entire trailer tipped and fell off the jack stands. Luckily AWAY from me! The tire crushed in the left wheel well side panel and ripped an 8" tear in the skin! It landed mostly on a very sturdy rear trailer hitch I had fabricated to hold a bike rack. That saved the Bambi from more serious damage. The right rear frame extension flexed a bit and put a crease in the bottom corner of the right rear rounded corner panel. The jack stand base got pinched under the sewer pipes and pushed up the belly pan a couple inches. Holding tank damage unknown as yet. I had NEGLECTED to block the trailer with wood under the rear frame or put down the stabilizer jacks with wood blocks under them. Either precaution would have averted this tragedy. Don't let this happen to you! Initial repair estimate from dealer... $6000.!!!