Sorry I never responded sooner... kinda have been out of the game.
As for my two Houser chassis, they are both out at HRE right now getting things fixed or changed. One is staying as a 426, and the other is being converted to the 03-05 yz 450 motor. Both chassis seemed to have issues, because previous owners either broke or changed something, so what was good on one frame seemed to be bad on another, so Mike has both as a template to return both back to the way they should be besides the adaption for the motors, and removable headstays.
Other than that I have also debated on selling everything from the hybrids and all my bikes off and just get out of atv's all together, but that's another story.
As to my recommendation scar, I prefer the houser chassis to the lonestar. The problems with the lonestar chassis is that they all have the same problems with cracking in the typical spots regardless if its a 250r or hybrid (seen both types crack in the same spots). I'd personally keep the Houser over the Lonestar, but thats just my opinion due to wanting something that will last. Both companies are still around and will help you out with them as well (have to hunt down Mark at Houser though since he was with them when they were doing the hybrids)