Thank you Gordon by the eg it looks like with taking off pos/t/age time and it takes 7 days for pip 2 to arrive and then say need minimum of 4 days for retuning I would think to post it back to arrive that it is 28 minus 11 so approx 17 days to complete? without extension?:: with 14 more if seeking extra time equaling 4 and bit weeks even with extension time ?