hi Have a mira elite 2 shower, feed from tank in attic. got very hard water. the inlet filter inside in the shower blocks with limescale very frequently. this leads to the shower not working properly -low flow, water cannot mix. so have to clean filter e.g isolate electric supply and water. alot of trouble. Could i pierce the inlet filter so that this blockage stops?. its only the film of limescale thats blocking it, not dirt. Has anybody tried this approach?