Just keep in mind that gear is not everything.The difficulty jump between t4 and t5 is quite high, although the solos and alerts have been nerfed lately (t5 solos were easy to begin with). Personally, as a Nature DPS I had a bit of trouble when I first started running those - even after I got a few manta pieces. And especially in groups with no tank. Had to change a lot in my approach, but I have to say that it was worth it. About a month after the last time a got kicked from T5a for not being able to compete with full T5 HL DPS I completed Nexus on second try, topping the DPS chart both times (first time we got to the last boss). The solution would be running with reasonably skilled league-mates, watching some videos of Your power-set being used in t5 and optimizing the use of whatever U have/can get to maximize Your performance in Your role - I assume You're DPS, since this is a DPS thread. I found Nitro/Flex Soders, Expert mods, quick-switching trinkets, Damaging consumables, DPS-oriented HT stuff, movement abilities (I switched to superspeed for better clips and faster combat movement), pure DPS spec and more SP (U can never have enough) helped a lot to close the gap between me and top DPS. But the main thing for t5 (especially raids) is a good ranged rotation that utilizes both weapons and powers, that clip each other and do as much ranged AoE and DoTs as Your power-set can muster. Also - dodging/rolling and keeping the right distance from bosses/adds. That's why ranged weapons, like rifle and Hand Blasters are popular among DPS all of a sudden. I still wouldn't recommend going into t5 raids though, without a full Manta - unless U're really good and/or have friends willing to carry U. I find that taking Your time works well for PvE in this game. People who attempt t5 under-geared - or other-wise not ready for it - tend to get disheartened after a bunch of fails and stop playing or play only PvP. Anyway - new T5 content is about to go live, so obtaining T5 Marks/gear should get a lot easier. Good luck.