ooops guys, meant to update. Here's wht i did (no guns please ) As she was, I added about 500ml of parafin and idled bike for about 5min. drained oil hot and flushed out filter (as was a new one) also with parafin. Primed filter with a bit of oil and drained that out too. filled her up with proper Castrol 4T semi synth 10w40 and there she goes. Oh, and there was actually 3 diaphram springs not two as I thought (must been dizzy ). Rode like a dream and my mate hasent complained yet, so I guess i's all good.