those of you with slate roofs: how do you sweep your chimney? last year i had a stainless liner installed. they also put on a cap. i'm installing a new BK princess this week and wanted a cleen sweep before i started burning. when i got up on the hip roof to look at the chimney it seems almost impossable to reach the cap to remove it. i have a ladder hook to walk the roof safely without damaging the slate but not sure how to reach the cap and get up to sweep. i would need a step ladder to reach the top. the chimney is double flue and about 10 feet on the low side and 5 on the high side. ill get some pics up tomorrow when the sun comes out. i'm having a sweep come monday but would like to be able to do it myself in the future. any ideas or somthing i'm missing? CANT WAIT for the BK!