I have an opportunity to buy a used Bluebird S22 seeder at a great price. The seeder itself is useless to me unless I can convert it to a power rake like the PR22. I haven't found any info regarding a conversion and the dealer here is no help. Does anyone know if this can be done. I could wait until Monday and talk with Bluebird directly, but I don't want to pass this deal up if a conversion kit exists for the unit. Thanks.