Hello,
When you mention HO due to uplink signal strength, it menas that the MS reaches its’ level on UL for HO. There is a window for which the MS will either power up or down to stay within this window. and I think the DL and UL (items # 1 & 2 are too high, try to reduce it) thresholds are high.
Are you facing this case insdie the city or in rural areas?
Regards,