SPI HAS PUSH-TO-TALK SWITCH IN SUCH POS THAT HE RELEASES YOKE AND ACFT CTL WHEN USING SWITCH.

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YESTERDAY I WROTE ASKING FOR A CALLBACK SUBSCRIPTION. TODAY -- SOONER THAN I HAD ANTICIPATED -- I HAVE SOMETHING TO RPT. I'VE DISCOVERED THAT A COMBINATION OF 2 HANDS AND 3 CTLS -- THROTTLE; YOKE AND PUSH-TO-TALK (PTT) SWITCH -- CAN BE A COMPLICATED MIXTURE. THE SMA I'M TRAINING ON (I'M A STUDENT PLT IN THE SOLO STAGE) HAS NO BUILT-IN PTT SWITCH SO I'VE ATTACHED ONE TO THE YOKE ALONG THE HORIZ PART OF THE YOKE; USING THE VELCRO STRAP THE SWITCH COMES WITH. WHILE PRACTICING TKOFS AND LNDGS I'VE GOTTEN INTO THE HABIT OF ANNOUNCING MY POS DURING EACH LEG OF THE PATTERN; A GOOD HABIT I'VE BEEN TOLD; ESPECIALLY SINCE I FLY IN A HIGH TFC AREA; NAMELY THE WASHINGTON; DC AREA. MY R HAND STAYS FULL-TIME ON THE THROTTLE. AS I TURN TO XWIND I DEPRESS THE PTT SWITCH WITH THE OTHER HAND. THE (SO FAR) MINOR PROBLEM I ENCOUNTER RESULTS FROM THE FACT THAT WITH ONE HAND ON THE THROTTLE; ONE HAND ON THE YOKE; AS I SHIFT MY HAND ON THE YOKE TO PRESS THE PTT SWITCH MY CTL OF THE YOKE WEAKENS. IN STRAIGHT AND LEVEL FLT THIS WOULDN'T BE A CONCERN; BUT SINCE I'M STILL CLBING AND TURNING ONTO XWIND; I NEED TO MAINTAIN THOROUGH CTL OF THE YOKE. YESTERDAY THE YOKE SLIPPED A BIT IN MY FINGERS; CAUSING ME TO HAVE LESS CTL FOR A SECOND OR TWO. AT 600 FT AGL; THAT SENT A CHILL THROUGH ME. THE SAME PROBLEM HAS HAPPENED TO ME WHILE TURNING TO BASE -- TRYING TO SIMULTANEOUSLY TURN THE YOKE; KEEP DOWNWARD PRESSURE ON THE YOKE AND PRESS THE PTT SWITCH WITH THE SAME HAND HAS MADE THE YOKE SLIP A LITTLE. NOW THAT I'VE DESCRIBED MY PROBLEM; I THINK I'VE DETERMINED THE ONLY SOLUTION: FLY FIRST; TALK LATER. AT LEAST; GIVEN THE CONFIGN OF THIS SMA; THAT'S WHAT I WILL DO.