diff --git a/services/tunebump/current/app/src/agebd_tunebump/service.py b/services/tunebump/current/app/src/agebd_tunebump/service.py
index 66cdcea..a962d20 100644
--- a/services/tunebump/current/app/src/agebd_tunebump/service.py
+++ b/services/tunebump/current/app/src/agebd_tunebump/service.py
@@ -10,7 +10,7 @@ from OMFacility import Facility
 from OMSLS2Magnet import SLS2Magnet
 from scipy import signal
 
-from agebd.pv import get_pv_class
+from agebd.pv import get_pv_class, get_pv_external_class
 from agebd.service.base import BaseService
 from agebd.service.pvs import BasePVs
 from agebd.utils import printgetversion
@@ -18,6 +18,7 @@ from agebd.utils import printgetversion
 __version__ = printgetversion(__file__)
 
 PV = get_pv_class()
+PV_EXTERNAL = get_pv_external_class()
 
 
 class PVs(BasePVs):
@@ -272,7 +273,7 @@ class PVs(BasePVs):
     }
 
     for key in quads:
-        quads[key].append(PV(key + ":I-SET.VAL"))
+        quads[key].append(PV_EXTERNAL(key + ":I-SET.VAL"))
 
     def __init__(self, service_name: str, pv_factory=PV):
         super().__init__(service_name, pv_factory)