General aviation pilot reported confusing taxiway markings at APA airport.

Narrative

I was cleared to land; and landed; on Runway 17R at APA. My taxi clearance was to exit the runway on B8. I; in error; crossed the stop bar and stopped on the (wrong) side of the stop bar. I was simultaneously told to stop by APA Ground Control.I fly into APA rarely; no excuse; and was not familiar with the placement of the stop bar so close to the 17R runway and so far away from the Runway 17L. I was told by the Tower Controller on the phone call; that a 'rules change' had moved the stop bar '100 feet per 1000 feet of elevation of APA.' Meaning the stop bar was moved 500 feet away from Runway 17L toward Runway 17R. The Tower Controller also informed me the centerlines of 17R and 17L are just 700 feet apart. Seeing the stop bar so close to the 17R; I inadvertently crossed it; seeing so much room away from 17L. I would never had encroached on Runway 17L since I knew I was not cleared to cross any runways.The stop bar is designated 'HS4' on the airport diagram. I admit not seeing the HS4 since I was intent on looking down the runway for the B8 intersection I had been cleared to exit; not looking on the airport diagram on my lap. As pilot in command it is my responsibility to know the intricacies at any airport I depart or arrive. However; the Ground Controller knows very well of this hot spot. He could have helped quite a bit by warning me of the HS4 when he cleared me to exit the runway directly into the hot spot. I'm very used to controllers asking me 'Are you familiar with...' local landmarks etc. Are you familiar with the hot spot on B8 taxiway? Ultimately it is my duty and responsibility to have not crossed the stop bar.I wonder; as I look over the airport diagram; why there is no hot spot designation for B14 intersection; also B16; which both ultimately directly intersect with Runway 17L; exactly as B8 does.