Multicast routing only working one direction

So a while back I was getting multicast routing setup on my Cisco Nexus 7k and an ASR 920 for audio over IP. I got that all setup and working great, but only in one direction and I cant figure out why it wont work both ways.

This is the basic setup

Mcast Sender & receiver <-->nexus 7k <--"private wan"-->asr920<--> mcast sender & receiver

I can get multicast to go from the nexus site to the asr site, but NOT from the asr site to the nexus site. Im sure it is some really simple config issue that I am just missing, but these ASR routers are not what I am used to so Im not surprised.

Here are some config snips

nexus pim config

!Command: show running-config pim !Time: Fri Nov 13 03:09:13 2020 version 6.2(2) feature pim ip pim rp-address 172.xx.x.2 group-list 224.0.0.0/4 ip pim ssm range 232.0.0.0/8 interface Vlan300 ip pim sparse-mode interface Vlan3001 ip pim sparse-mode interface port-channel300 ip pim sparse-mode interface port-channel2000 ip pim sparse-mode interface port-channel2000.2 ip pim sparse-mode 

nexus pim neighbor (the ip is the expected neighbor ip)

PIM Neighbor Status for VRF "default" Neighbor Interface Uptime Expires DR Bidir- BFD Priority Capable State 172.xx.x.2 port-channel2000.2 04:36:06 00:01:44 1 no n/a 

nexus pim RP

sh ip pim rp PIM RP Status Information for VRF "default" BSR disabled Auto-RP disabled BSR RP Candidate policy: None BSR RP policy: None Auto-RP Announce policy: None Auto-RP Discovery policy: None RP: 172.xx.x.2*, (0), uptime: 13w5d, expires: never, priority: 0, RP-source: (local), group ranges: 224.0.0.0/4 

ASR PIM config, its enabled on all appropriate interfaces just didnt show that here.

ip pim rp-address 172.xx.x.2 ip pim ssm default ip multicast-routing distributed 

ASR pim neighbor (the ip is the expected neighbor IP)

Neighbor Interface Uptime/Expires Ver DR Address Prio/Mode 172.xx.x.1 BDI2002 04:39:01/00:01:19 v2 1 / G 

ASR PIM rp mapping

PIM Group-to-RP Mappings Group(s): 224.0.0.0/4, Static RP: 172.xx.x.2 (?) 

Feel free to ask for more info, I'll be fiddling with this for a while tonight

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Thanks in advance!