diff --git a/dune/tectonic/spatial-solving/tnnmg/linearization.hh b/dune/tectonic/spatial-solving/tnnmg/linearization.hh
index 3d986305343c6763445db02e0f66b0231156b412..f266bf326fd7c108e3b66c40cba08e34bb8482c5 100644
--- a/dune/tectonic/spatial-solving/tnnmg/linearization.hh
+++ b/dune/tectonic/spatial-solving/tnnmg/linearization.hh
@@ -52,7 +52,7 @@ class Linearization {
       }
     }
 
-     //std::cout << "regularityTruncation: " << count << std::endl;
+     std::cout << "regularityTruncation: " << count << std::endl;
   }
 
   template<class NV, class NBV, class T>
@@ -121,6 +121,7 @@ class Linearization {
       BitVector obstacleTruncationFlags = ignore_;
       BitVector regularityTruncationFlags = ignore_;
 
+      //regularityTruncationFlags.unsetAll();
       //std::cout << "ignore truncation: " << truncationFlags_.count();
 
       determineTruncation(x, f_.lowerObstacle(), f_.upperObstacle(), obstacleTruncationFlags, obstacleTruncationTolerance_); // obstacle truncation
@@ -177,11 +178,13 @@ class Linearization {
 
       // nonlinearity part
       phi.addHessian(x, hessian_);
+
       //truncateMatrix(hessian_, regularityTruncationFlags, regularityTruncationFlags);
 
       //std::cout << x[0] << " " << hessian_[0][0] << std::endl;
 
       B -= hessian_;
+      //truncateMatrix(B, regularityTruncationFlags, regularityTruncationFlags);
       //print(B, "phi hessian: ");
 
       // compute gradient
@@ -198,6 +201,14 @@ class Linearization {
       phi.addGradient(x, negativeGradient_);
 
       C -= negativeGradient_;
+      //truncateVector(C, truncationFlags_);
+
+      /*for (size_t i=0; i<C.size(); i++) {
+          std::cout << "dof " << i << std::endl;
+          std::cout << "truncation: " << regularityTruncationFlags[i] << std::endl;
+          std::cout << "C[i]: " << C[i] << std::endl;
+      }*/
+      //print(truncationFlags_, "truncationFlags_: ");
       //print(C, "phi gradient: ");
 
       // -grad is needed for Newton step