I'm sure some one can help me with this, I hope? I've repaired the leaky front o/s roof drain. Now I need to fix the roof seal, its not inflating. I've traced back the tube to the front bulkhead. On my car, it goes into a non working one way valve (I need a new one) and then straight into a take-off behind the brake servo. I have a spare reservoir, but where does it fit and why would the previous owner by-pass one straight to the seal? I could do with some advice and a scematic of any pipe routing. Any help greatly appreciated.