Supercard ?alignment problem

Hi,

I have been using a supercard with my GBA for some time.
Recently, it has become very tempremental - often dont get the
'nintendo' but at the bottom of the boot screen or if I do, the
supercard menu doesnt load.

I have tried cleaning the contacts of the GBA and the supercard but
that hasnt helped (have used Maplins electrical cleaner).

The cartridge does occasionalyl work but it has to be angled in very
precisely.

All my 'real' gameboy cartridges seem to work fine.

Any ideas as to how I can fix this? It seems like I need to re-align
the supercard board, but I'd need the measurements and pin positions to
do this.

Cheers
squelch41