Gentlemen......Are you using synchronizers with Gas or Glow engines....have flown twins for a number of years and haven't seen much benefit from them....maybe you can give some feedback.....I use all Gassers and they are "usually" within a couple hundred RPM thru-out Rpm range.....I like simplicity and I dont like adding components unless theres a reasonable benefit from them.....In process of Painting/Finishing 102" B-25 #2 .....First one lost #1 engine and "Immediately" (If not sooner)......snapped inverted......pulled power in #2 eng back to idle, rolled it back over and lowered nose to pick up some speed....was able to land unfortunately it was on a rock pile causing extensive damage.......would really like to add telemetry to see engine RPM at all times...might be only way to avoid engine out nightmares.....If throttle(s) are retarded before engine quits ...chances are much higher for recovery......I have seen 5 or 6 B-25's lose an engine and all of them returned to"KIT" form.....including one with a gyro....still wouldn't fly on one.........Bill..... i