ko esprit universe 2.4 problems please help

[jampat2004]

hi all.
bought a ko universe 2.4 set last year 2nd hand but in new condition,problems started almost straight away with the tranny not binding to both my cars.
replaced the module 6 months ago with a new one and problem seemed to go away,but over last couple of weeks has now returned but much worse.
raced at chadderton on sunday was a nightmare was having to leave transmitter on most of the day in order to keep the red led on the module.
what should happen is the led should be on when switching tranny on but its not,even when holding button in on module and switching tranny on the led should dim for binding mode but this hardly happens.
on sunday at chadderton i was having to go outside to rebind my cars every race nearly or turn my tranny and car on 10 mins before each race and hope it would work,cant carry on like this with the unpredictability of these sets totally spoils your race day.
im now thinking that the problem lies between the tranny and the module not connecting to each other which in turn is causing binding problems.
so much appreciated if anyone can help or point me in the direction of someone who can repair such items.
many thanks jamie