New Triptych

Here's a new triptych for your consideration:



I just finished stretching this one today, and it's overall size is 24" x 64". I'm having a lot of trouble with warped, or possibly not precisely cut, stretcher bars. I use Best Heavy Duty stretcher bars, which are the best ones around, but I've been having this problem for a few months now. If you know of anything better, do tell! I may have to go with custom-made stretchers.