Stuck Shower flanges

[sikm]

All I want to do is replace the washers but I can't loosen the tap flanges in the shower, They're the domed kind but I can't budge them even when I try with a rubber glove on. Obviously I can't get behind them to use WD40 so what can I do? I don't want to damage the chrome and would welcome any advice.

Simon

[watson]

Just before anybody replies Simon, I reckon they'll want to see a Pic....just to give them an idea.

[woodchip]

one of these will do it, about $10 from most hardware stores

General Tools and Instruments (http://www.generaltools.com/1566--RUBBER-STRAP-WRENCH_p_176.html)

cheers