Hey guys! I love front stretch series because it is helping me address so many of my weaknesses (achilles, plantar, and hips!). One struggle I can't seem to overcome is the single leg forward fold against the wall. No matter how I adjust, I have immediate pain in the hip of the standing leg. The closest I've been able to do pain free is getting completely away from the wall and bringing one leg up/behind me (like in a standing split). This takes my hips away from being square, so that makes me think it isn't a good progression/substitute.
I've been chatting with Mark about rehabbing my hips in this thread