I lose 90% of my custards but thats over a 10 year period.
What length of time do you measure your 25% loss over Clive?
It is high, too high IMO, I would feel that things wernt working well if I lost 10 % within a year (The only reason I say the figure of a year is that ANYTHING can happen in that length of time, move house, become redundant, mother-in-law moves in and brings her shiner with her, undercut and possibly get sacked by custard but NOT if doing a good job)