After a bit of quiet time at the shed today its fixed, it was an extremely worn flipper pawl causing the problem,with the playfield in the upright position activating the flipper the EOS would open no worries and stay open but when the playfield was back in its rest position the weight of the flipper bat and pressure on the EOS would close it again causing the coil to heat up,in hindsight probably should of picked it up earlier
Interesting problem / solution - Well done picking that one up !