Hi;Have just collected 2 YS 63s now thought comes up that should be able torun a central fuel tank in the fuselage with there pressure system?Seen many posts re this with 2 strokes etc not feasible as if one engine quits bleed off pressure to tank and other stops?WIth the YS the pressure stays on even couple days after a engine is shut off as anyone can tell who forgets which line to take off can verify so even with both engines on one tank even if one quit it shouldn't affect the fuel pressure to other?THis would make life simpler as problem is aways the room in the nacelles for tanks.Also the fact they basically fit in 40 size mounts is great too!!Dave,I am posting similar question in twins column see if anyone there has actually tried it,hope that is OK!Thanks!