I have been flying a Pari-Tech Natrix since September of this year logging 18 flights using the Mercury SRS with a Futaba 18MZ and 6303SB receivers. I was attending the Best in the West Jet Rally last week Oct. 4-9 and made approximately 10 flights on the plane. At this point I got help from Ali Machincy to activate the IGyro in the Mercury and with his help used the setup assistant and then the test fly assistant. Ali offered to fly the plane on the first flight to adjust the gain and make certain everything was functioning normally. After about two minutes of flight and dialing up the gain slowly the plane made a hard 1/4 roll before Ali regained control. He flew for a few more seconds and the plane made two fast full rolls to the right. He switched off the gyro and immediately landed without further incident. I then had Trond Hammerstad look at the plane and he suggested that I should be using 7003SB recievers rather than the 6303's I had in the plane albeit I had made nearly 30 flights on the plane without incident. I completely trust Trond's advice and got two new 7003SB receivers from a fellow Team Futaba pilot. Trond and I installed the two new receivers and then Ali flew the plane again. This flight had the same result with the plane losing control after the gyro switched on and the gain began to be dialed up so Ali landed again with the gyro off. I flew the plane the rest of the event with the gyro turned off and had no further incident, the radio functioned normally.
Trond and Ali suggested I ask you for some help and said I could tell you that they helped me and could not figure out what was going on. What could be the cause of this issue? I am afraid to turn the gyro on to finish the gain adjustment and fly it with the gyro function. I love the Mercury SRS but want to be able to use all its function with my 18MZ.