Roger,
The raisins can be left in the secondary for 3 or 4 weeks no problem.... But on this kit Joe put them in the primary instead.... Here is a quote from one of the previous pages of this thread.....
This kit was still started on August 22 it is August 27 five days later we reached the capitalization point this will boost the alcohol level that will give the amarone it's high abv.characteristics ,were also going to do at this point because I'm causing a second fermentation, I'm going to add the Sun maid raisins at this point to my open bucket ,these is a a 2 pound bag but I'm only going to add half of one of the bags ,this along with the capitalization should prove to be enough to add a depth note to the sauce ,at that point we will have to watch the specific gravity really close, its going to start not only a second fermentation but rehydrate the raisins also this is the tricky part if you haven't done this before, maybe you shouldn't stay on the course as per the manufacturer, or follow me closely when this one is done if those out there thought the sangiovese was decent ,this wine will be exceptional... I assure you. At this point we bump up the SG 1.020 just enough to put us over the edge along with the raisins and their chemistry adding sugars to the wine. Starting to look good.................. stay tuned