ok so i bought a Nissin Di866 on ebay as a cheaper alternative to a nikon sb 800/900 having done a lot of research. it arrived today and i had a quick play with it. although i have read in numerous places that the recycling time is apx. 3 seconds this is taking anything up to 7 seconds! it is also making an odd high pitched static sound ( dont know if this is normal) should i send it back or is there something im not doing right? the biggest problem is i have to decide what to do with it today as i am away for a week as if tomorrow.