My new OS 120 four stroke Surpass came with a 45 degree muffler pipe that wouldn't mount underneath the plane as the angel is too large. So, I purchased a flexible pipe to use instead, picture below.

Has anyone else done something similar? I'm wondering if this pipe, which is fairly rigid, but still flexible, will hold the muffler in place in flight without it vibrating loose before I fly it.

Thanks in advance.